☞ eikos-
eicosa-
combining form 
or eicos-
Etymology: International Scientific Vocabulary, from Greek eikosa-, eikos- twenty, from eikosi — more at vicenary 
 : containing 20 atoms (as of carbon) 
< eicosane >
or eicos-
< eicosane >
| 词汇 | eicosa- | 
| 词根词缀 | OED Webster ☞ eikos- eicosa- or eicos- < eicosane > | 
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